The "Love Me Down" singer, who celebrates her 36th birthday today (December 2), came home to quite the romantic birthday setting from her new flame, personal trainer Sam Asghari, who escorted the pop star to a room illuminated by sparkling light ornaments, filled with cupcakes, and completed with an assemblage of rose petals in the shape of a heart to set the lovey-dovey mood.

Although the cherry on the top of it all might have been the 23-year-old's love note to his "Womanizer" goddess in the caption, which reads: "HAPPY BIRTHDAY TO MY ONE AND ONLY Thank you for being you, thank you for showing me the true meaning of a beautiful woman and a strong mother, and most of all thank you for being mine. I consider myself the luckiest man on this planet."

The video, which depicts a smiling Spears in a lacey, backless black dress as she bends down to blow out her birthday candles, arrives after the lovebirds were seen sharing a kiss in another festive video (below) posted to the singer's Instagram on Friday (December 1) the day before.

Spears and her beau were first introduced last year while working on the set of the Glory superstar's music video for "Slumber Party," in which Asghari features as her love interest. After filming, the pair exchanged numbers and have been going steady ever since.